#include<stdio.h>
int main()
{
    int m=1,n=2,*p=&m,*q=&n;
    int *r;
    r=p;
    p=q;
    q=r;
    printf("%d %d %d %d",m,n,*p,*q);
    int w[4][3]={{1},{2},{3,4},{5}};
    int b;
    b=0||-1;
    printf("%d",b);
    
    return 0;
}